Add the year to the post date shortcode in Vintage theme.

functions.php

<?php

add_filter( 'genesis_post_date_shortcode', 'custom_post_date_shortcode', 10, 2 );
/**
 * Customize post date shortcode, to include year.
 *
 * @param string $output Existing post date shortcode output.
 * @param array  $atts   Associative array of shortcode attributes.
 *
 * @return string Amended markup.
 */
function custom_post_date_shortcode( $output, $atts ) {

    return sprintf(
            '<span class="date time published" title="%5$s">%1$s<span class="day">%2$s</span> <span class="month">%3$s</span> <span class="year">%4$s</span></span>',
            $atts['label'],
            get_the_time( 'j' ),
            get_the_time( 'M' ),
            get_the_time( 'Y' ),
            esc_attr( get_the_time( 'c' ) )
    );

}